產(chǎn)品詳情

Rating Catalog Number of series cells 1, 2, 3, 4, 5, 6, 7, 8 Cell chemistry SuperCap Charge current (max) (A) 10 Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 5 Vin (max) (V) 28 Absolute max Vin (max) (V) 33 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 26 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 85
Rating Catalog Number of series cells 1, 2, 3, 4, 5, 6, 7, 8 Cell chemistry SuperCap Charge current (max) (A) 10 Features BAT temp thermistor monitoring (hot/cold profile) Vin (min) (V) 5 Vin (max) (V) 28 Absolute max Vin (max) (V) 33 Control topology Switch-Mode Buck Battery charge voltage (min) (V) 2.1 Battery charge voltage (max) (V) 26 Control interface Standalone (RC-Settable) Operating temperature range (°C) -40 to 85
VQFN (RVA) 16 12.25 mm2 3.5 x 3.5
  • Charge Super Capacitor Pack From 2.1 V to 26 V
  • CC/CV Charge Profile From 0 V Without
    Precharge
  • 600-kHz NMOS-NMOS Synchronous Buck
    Controller
  • Over 90% Efficiency for up to 10-A Charge
    Current
  • 5-V to 28-V VCC Input Voltage Range
  • Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±3% Charge Current Regulation
  • High Integration
    • Internal Loop Compensation
    • Internal Digital Soft Start
  • Safety
    • Input Overvoltage Protection
    • Capacitor Temperature Sensing Hot and Cold
      Charge Suspend
    • Thermal Shutdown
  • Status Outputs
    • Adapter Present
    • Charger Operation Status
  • Charge Enable Pin
  • 30-ns Driver Dead Time and 99.5% Maximum
    Effective Duty Cycle
  • Automatic Sleep Mode for Low Power
    Consumption
    • <15-μA Off-State Super Capacitor Discharge
      Current
    • <1.5-mA Off-State Input Quiescent Current
  • APPLICATIONS
    • Memory Backup Systems
    • Industrial UPS Systems and Power Transient Buffering
    • Bridge Power to Buffer the Battery

All other trademarks are the property of their respective owners
  • Charge Super Capacitor Pack From 2.1 V to 26 V
  • CC/CV Charge Profile From 0 V Without
    Precharge
  • 600-kHz NMOS-NMOS Synchronous Buck
    Controller
  • Over 90% Efficiency for up to 10-A Charge
    Current
  • 5-V to 28-V VCC Input Voltage Range
  • Accuracy
    • ±0.5% Charge Voltage Regulation
    • ±3% Charge Current Regulation
  • High Integration
    • Internal Loop Compensation
    • Internal Digital Soft Start
  • Safety
    • Input Overvoltage Protection
    • Capacitor Temperature Sensing Hot and Cold
      Charge Suspend
    • Thermal Shutdown
  • Status Outputs
    • Adapter Present
    • Charger Operation Status
  • Charge Enable Pin
  • 30-ns Driver Dead Time and 99.5% Maximum
    Effective Duty Cycle
  • Automatic Sleep Mode for Low Power
    Consumption
    • <15-μA Off-State Super Capacitor Discharge
      Current
    • <1.5-mA Off-State Input Quiescent Current
  • APPLICATIONS
    • Memory Backup Systems
    • Industrial UPS Systems and Power Transient Buffering
    • Bridge Power to Buffer the Battery

All other trademarks are the property of their respective owners

The bq24640 device is a highly integrated switched-mode super capacitor charge controller. The device offers a constant-frequency synchronous PWM controller with high accuracy charge current, voltage regulation, and charge status monitoring.

The bq24640 charges a super capacitor in two phases: constant current and constant voltage (CC/CV). The device can charge super capacitors from 0 V with current set on the ISET pin. When the super capacitor voltage reaches the programmed target voltage, charge current begins tapering down.

The bq24640 enters a low-current sleep mode
(<15 µA) when the input voltage falls below the output capacitor voltage.

The bq24640 has an input CE pin to enable and disable charge, and the STAT and PG output pins report charge and adapter status. The TS pin on the bq24640 monitors the temperature of the capacitor and suspends charge during hot and cold conditions.

The bq24640 device is a highly integrated switched-mode super capacitor charge controller. The device offers a constant-frequency synchronous PWM controller with high accuracy charge current, voltage regulation, and charge status monitoring.

The bq24640 charges a super capacitor in two phases: constant current and constant voltage (CC/CV). The device can charge super capacitors from 0 V with current set on the ISET pin. When the super capacitor voltage reaches the programmed target voltage, charge current begins tapering down.

The bq24640 enters a low-current sleep mode
(<15 µA) when the input voltage falls below the output capacitor voltage.

The bq24640 has an input CE pin to enable and disable charge, and the STAT and PG output pins report charge and adapter status. The TS pin on the bq24640 monitors the temperature of the capacitor and suspends charge during hot and cold conditions.
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類型 標(biāo)題 下載最新的英語版本 日期
* 數(shù)據(jù)表 bq24640 High-Efficiency Synchronous Switched-Mode Super Capacitor Charger 數(shù)據(jù)表 (Rev. A) PDF | HTML 2015年 7月 31日
應(yīng)用手冊 如何快速安全地為超級電容器充電 PDF | HTML 英語版 PDF | HTML 2023年 3月 28日
應(yīng)用手冊 BQ241xx/BQ246xx Selection of Multi-Cell Standalone Switching Battery Chargers 2019年 12月 31日
選擇指南 電源管理指南 2018 (Rev. K) 2018年 7月 31日
用戶指南 Multi Cell Synchronous Switch-Mode Charger, EVM (HPA421) 2010年 2月 18日

設(shè)計和開發(fā)

如需其他信息或資源，請點擊以下任一標(biāo)題進入詳情頁面查看（如有）。

評估板

BQ24640EVM — 用于 BQ24640 多節(jié)同步開關(guān)模式充電器的評估模塊

bq24600/bq24620/bq24640 評估模塊。bq2461x 是高度集成的鋰離子或鋰聚合物開關(guān)模式電池充電控制器。bq2463x 是高度集成的開關(guān)模式電池充電控制器，專為磷酸鋰電池化學(xué)物充電而設(shè)計。bq24640 是高度集成的超級電容器開關(guān)模式充電控制器。它們可以為恒頻同步 PWM 控制器提供高準確度充電電流和電壓調(diào)節(jié)、適配器電流調(diào)節(jié)、終止、充電預(yù)處理和充電狀態(tài)監(jiān)控。bq24600/bq24620 (...)

用戶指南: PDF
TI.com 上無現(xiàn)貨
計算工具

SLUC175 — bq246xx Calculation Tool V1.5

支持的產(chǎn)品和硬件

支持的產(chǎn)品和硬件

產(chǎn)品
電池充電器 IC
BQ24600 — 獨立 1 至 6 節(jié)降壓電池充電控制器 BQ24610 — 具有 5V 至 28V 輸入的獨立 1 至 6 節(jié)降壓電池充電控制器 BQ24616 — 符合 JEITA 標(biāo)準的獨立 1 至 6 節(jié)降壓電池充電控制器 BQ24617 — 具有 5V 至 24V 輸入的獨立 1 至 5 節(jié)降壓電池充電控制器 BQ24618 — 支持 USB 且具有 5V 至 28V 輸入的獨立 1 至 6 節(jié)降壓電池充電控制器 BQ24620 — 適用于磷酸鋰電池的獨立 1 至 7 節(jié)降壓電池充電控制器 BQ24630 — 適用于磷酸鐵鋰電池、具有系統(tǒng)功率的獨立 1 至 7 節(jié)降壓電池充電控制器 BQ24640 — 適用于超級電容器的獨立 1 至 8 節(jié)降壓電池充電控制器 BQ24650 — 具有太陽能輸入和集成式 MPPT 的獨立 1 至 6 節(jié)降壓電池充電控制器
參考設(shè)計

PMP7327 — 28Vdc Input Super Cap Charger with Boost Converter for Bus Holdup

此參考設(shè)計使用 BQ24640 超級電容器充電控制器來為一大堆超級電容器充電，使這些電容器的電壓低于輸入總線電壓。在輸入總線壓差期間，超級電容器的電量用于為升壓轉(zhuǎn)換器供電，可提 供 10A 的輸出電流 (26.2V)。此輸出電流可用于保持總線電壓長達 10 秒（即保持 260W 10 秒）。
測試報告: PDF
原理圖: PDF
封裝 引腳 CAD 符號、封裝和 3D 模型
VQFN (RVA) 16 Ultra Librarian

訂購和質(zhì)量

包含信息：
  • RoHS
  • REACH
  • 器件標(biāo)識
  • 引腳鍍層/焊球材料
  • MSL 等級/回流焊峰值溫度
  • MTBF/時基故障估算
  • 材料成分
  • 鑒定摘要
  • 持續(xù)可靠性監(jiān)測
包含信息：
  • 制造廠地點
  • 封裝廠地點

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